Noninvasive (continuous or intermittent) blood pressure measurements use volume clamping, applanation tonometery, pulse transit time, pulse wave velocity, radar, doppler-blood flow, echography, photoacoustics, bioimpedence, ultrasound, spectro-photometry, ballistocardiography, ECG and/or photoplethysmography .—Goto Cuff Based Solutions
TOP COMPANIESBLOOD PRESSURE PRODUCT FDA ClearedMethod
Aktiia
Hilo Band/oBPM
YESoptical sensor on wrist
Softsonics Clinical validation of a wearable ultrasound sensor of blood pressure | Nature Biomedical Engineeringpatchunder developmentNOultrasound arterial wall dimension -radar- PW analysis
Sonologiunder developmentNOultrasound – PW analysis
Nanowear Inc.Simple-SenseNOultrasound, ppg,ekg
Vena Vitalsbp skin patch and bandNOapplanation ?
Texas AM- College StationGraphene electrode tattooNObioimpedence
SamsungGalaxy 9 optical sensorNOMy BP Lab
Health Stats International PE LtdA-Pulse Central Aortic Systolic BPNOwrist band-PW
Michigan State Universityc fingertip bp monitorNOSmart phone casing measures via oscillometric finger pressing
Sotera Wireless ref1 xref2 cNIBPNOwrist band -pTT
Bio BeatWrist and Chest Attachment DevicesYESphotoplethysmography and PWTT
CardieX-BLUMIOArm band radar basedNOPWT from 2 points on arm
BOLD diagnostics    Lt and Rt blue tooth wrist bandsNOdelta (lt-rt) PWT
Aidar Health SPO2,3 lead ecg, RR, Temp and BP MouthLab deviceNOdelta (lt thumb – upper lip) PWT
Tensys Medical NOapplanation
Viatom TechCheck MeNOpulse wave
TacSenseFootwareNO
EdwardsClearsight systemNOvolume clamping
CNSystemsCNAP HDNOvolume clamping
ValencellSensorNO
Binah.aibvueNOfacial recognition
CharmcareH2-BP H2-PMNO
OmronHeartguardNOWrist watch
AppleiWatch + airpods – provides high blood pressure notificatons Apple Watch Series 11, NO
PPG + EKG + ?
MicrosoftGlabella: Continuous Cuff-less, Wearable, and Unobtrusive Blood Pressure Measuring and Aurora Project: NOSmart Glasses
Johnson and JohnsonNOWrist watch
Alphabet : Verily
Fitbit
Nest
Fit Bit WatchNOWrist watch
Rockley PhotonicsBioptx wrist bandNOWrist Band
AmazonHalo Fit Wrist Watch/Band NOWrist watch
MobvoiWatchNOWrist watch
Level42 AIImpulse TorNOECG with stethoscope -infrasounds

References

Cuffless Blood Pressure Measurement | Annual Review of Biomedical Engineering (annualreviews.org)

Smartphone-based blood pressure monitoring via the oscillometric finger-pressing method | Science Translational Medicine

Wearable blood pressure sensors for cardiovascular monitoring and machine learning algorithms for blood pressure estimation | Nature Reviews Cardiology

Cuffless Blood Pressure Measurement | Annual Review of Biomedical Engineering (annualreviews.org)

Smartphone-based blood pressure monitoring via the oscillometric finger-pressing method | Science Translational Medicine

The Microsoft Research Aurora Project: Important Findings on Cuffless Blood Pressure Measurement | Hypertension (ahajournals.org)

Cuffless blood pressure measuring devices: review and statem… : Journal of Hypertension (lww.com)

The Promise and Illusion of Continuous, Cuffless Blood Pressure Monitoring | Current Cardiology Reports (springer.com)

A new method of continuous blood pressure monitoring using multichannel sensing signals on the wrist | Microsystems & Nanoengineering